Current Questions

Just reading through this thread and came across this statement

Current is like the flow of water. It is actually the flow of electrons.

I have encoutered this depiction many time in various threads - I might have been guilty of using it myself way back when - oops🙄

Here is a very good explanation...

Drift velocity, the average speed at which electrons travel in a conductor when subjected to an electric field, is about 1mm per second. It’s the electromagnetic wave rippling through the electrons that propagates at close to the speed of light. The dimensions of the wire and electrical properties like its inductance affect the exact propagation speed, but usually it will be around 90 per cent of the speed of light – about 270,000 km/s.

This clip is from the following link if you would like to read more.

• https://www.sciencefocus.com/science/how-fast-does-electricity-flow/

With an audio (AC) signal, the electrons shuffle between electrons in the wire randomly

Regards - Steve

High current amps are heavy.  That's a rule of thumb.  Transformers and heat syncs.  Current creates heat.

I understand the "I" for current and its origin.  Why do all or most electrical items use the letter "A"  example:  1.2A

I understand the "I" for current and its origin.  Why do all or most electrical items use the letter "A"  example:  1.2A

It is same as referring to resistance as a thing, and the quantity of the resistance in ohms.

Similarly “speed” can be given in Mach number, MPH or KPH, or percentage of the speed of light… etc.

@daledeee1 "Why do all or most electrical items use the letter "A" example: 1.2A"

A for amps. Amp for Ampere.